Next.js App Router & Core Web Vitals Engineering

"use server"; import { z } from "zod"; import { revalidateTag } from "next/cache"; const InquirySchema = z.object({ fullName: z.string().min(2, "Name required").max(60), email: z.string().email("Valid email required"), message: z.string().min(10, "Message must exceed 10 chars"), }); export async function submitContactInquiry(prevState: any, formData: FormData) { const parsed = InquirySchema.safeParse({ fullName: formData.get("fullName"), email: formData.get("email"), message: formData.get("message"), }); if (!parsed.success) { return { success: false, errors: parsed.error.flatten().fieldErrors }; } // Persist to database & trigger webhook await saveInquiryToDatabase(parsed.data); revalidateTag("inquiries"); return { success: true, message: "Inquiry received with 24h SLA." }; }